... . Advanced technique 4. Good quality,high quality DYAN Mine Powder Briquette Machine with advanced technology Mine Powder Briquette Machine, generally four rollers, can supply ... for briquetting:1. Color and black metallic mine powder2. Coal powder, Coke powder, Lignite, etc,3. Charcoal powder, fireproof materials, Desulfurization gypsum, Dolomite, etc ...